To optimize the performance of DSL modems in the same cable bundle, the size and position of the bandwidth used for transmission is intelligently selected when the bit rate necessary for making the transmission is less than the total available bandwidth. By intelligently selecting a minimum number of...http://www.google.co.uk/patents/US7126984?utm_source=gb-gplus-sharePatent US7126984 - Near-end crosstalk noise minimization and power reduction for digital subscriber loops
